title: Preparation and characterization of poly(L-lactide)-co-poly(trimethylene carbonate)/talc film.
abstract: Poly(L-lactide)-co-poly(trimethylene carbonate) (PLLA-PTMC) composites with various talc content as food packaging materials were prepared by solvent casting method. The effect of talc filler loading (0, 1, 2, and 3 wt%) on phase morphology of PLLA-PTMC/Talc composites and improvement in resulting properties were reported. The X-ray diffraction (XRD) patterns and differential scanning calorimetry (DSC) curves indicated that the crystallinity of PLLA-PTMC/Talc composites increased. Fourier transform infrared spectroscopy (FTIR) suggested that there were strong interactions between PLLA-PTMC copolymer and talc filler. The scanning electron microscopy (SEM) image of composite films revealed certain homogeneity between PLLA-PTMC and Talc, when the talc filler did not exceed 3 wt%. The elongation at break of composite films significantly (p<0.05) improved with the addition of talc filler. Furthermore, there were 23%, 31%, and 14% improvement in water vapor barrier properties at 1, 2, and 3 wt% of talc in PLLA-PTMC/Talc composites, respectively. This had been confirmed by thermogravimetric analysis (TGA).
authors.affiliation: Institute of Chemical Engineering, Kunming University of Science and Technology, Kunming 650550, China.
authors.forename: Jiyi
authors.initials: J
authors.lastname: Yang
authors.forename: Yuyue
authors.initials: Y
authors.lastname: Qin
authors.forename: Minglong
authors.initials: M
authors.lastname: Yuan
authors.forename: Jing
authors.initials: J
authors.lastname: Xue
authors.forename: Jianxin
authors.initials: J
authors.lastname: Cao
authors.forename: Yan
authors.initials: Y
authors.lastname: Wu
authors.forename: Mingwei
authors.initials: M
authors.lastname: Yuan
mesh_terms: D004146:Dioxanes / Q000737:chemistry*; D008422:Materials Testing; D055595:Mechanical Phenomena; D008855:Microscopy, Electron, Scanning; D011091:Polyesters / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013627:Talc / Q000737:chemistry*; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D004146:Dioxanes; D011091:Polyesters; D011108:Polymers; D013627:Talc; C059299:polytrimethylene carbonate; C033616:poly(lactide)
keywords: Composites; Copolymer; Polycarbonates; Polyesters; Properties and characterization; Talc